Progesterone Congeners [Chemical/Ingredient] N0000011301 C1257993 C291657 Steroidal compounds related to PROGESTERONE, the major mammalian progestational hormone. Progesterone congeners include important progesterone precursors in the biosynthetic pathways, metabolites, derivatives, and synthetic steroids with progestational activities. M0447349 Progesterone Congeners D045167 382321 Progesterone Congeners Gonadal Steroid Hormones [Chemical/Ingredient]